Senior Backend Engineer - Payments

About this role

Location: Remote (U.S. overlap preferred)
Type: Contract (Full-Time Preferred)
Domain: Payments / Fintech / eCommerce Infrastructure
About the Project
We are leading a modernization initiative for a high-growth digital commerce platform focused on payment orchestration, gateway optimization, and API-driven architecture.
Experience with orchestration platforms such as Gr4vy, Stripe, etc. is highly desirable, but not required. Deep payments experience is mandatory.
About the Role
We are seeking a senior backend engineer to support a payment modernization initiative. You will work directly under the CTO to build and integrate payment orchestration systems and direct PSP connections.
Responsibilities

Build and maintain API integrations with multiple PSPs

Implement payment routing logic

Develop webhook handlers

Implement tokenization flows

Support subscription billing logic

Ensure resilience, observability, and clean error handling

Requirements
6+ years backend experience

Strong in one or more:

Node.js

Java

Python

Go

Extensive REST API integration experience

Webhook processing experience

Payments domain experience required

Strong understanding of:

Auth/Capture flows

Refund logic

Chargeback lifecycle

Subscription billing

Benefits

High-Impact Architecture Project

Executive Visibility

Competitive Contract Compensation

Flexible Remote Structure

Clear Scope, Clear Timeline

Long-Term Engagement

Technical Ownership

Originally posted on Himalayas